Muted change in Atlantic overturning circulation over some glacial-aged Heinrich events

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Muted change in Atlantic overturning circulation over some glacial-aged Heinrich events

Heinrich events—surges of icebergs into the North Atlantic Ocean—punctuated the last glacial period. The events are associated with millennial-scale cooling in the Northern Hemisphere. Fresh water from the melting icebergs is thought to have interrupted the Atlantic meridional overturning circulation, thus minimizing heat transport into the northern North Atlantic. The northward flow of warm wa...

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The strength of Atlantic meridional overturning circulation is believed to affect the climate over glacial-interglacial and millennial timescales. The marine sedimentary (231)Pa/(230)Th ratio is a promising paleocirculation proxy, but local particle effects may bias individual reconstructions. Here we present new Atlantic sedimentary (231)Pa/(230)Th data from the Holocene, the last glacial maxi...

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ژورنال

عنوان ژورنال: Nature Geoscience

سال: 2014

ISSN: 1752-0894,1752-0908

DOI: 10.1038/ngeo2045